January 24, 20251 yr I feel embarrassed to ask this question but here it goes. If my 4 HDD backplane has one SFF-8643 connection and I connect it to a port of my 9400-16i HBA, does that mean each drive will get 1 PCIE lane for data to transfer? Asking for a friend....
January 24, 20251 yr Looking at the spec sheet for the 9400 it looks like it provides 1 lane for each sata connection. I think the max data transfer for a sata3 connection is 600MB/s and the max for a pcie3 lane is 1GB/s
January 25, 20251 yr Community Expert 11 hours ago, peace-keeping-villa8590 said: does that mean each drive will get 1 PCIE lane for data to transfer? Assuming they are SATA drives, each one will get a SATA3 link (600MB/s)
January 25, 20251 yr Author 11 hours ago, JorgeB said: Assuming they are SATA drives, each one will get a SATA3 link (600MB/s) They are 12Gb SAS SSD's
January 25, 20251 yr Author 22 hours ago, lovaan said: Looking at the spec sheet for the 9400 it looks like it provides 1 lane for each sata connection. I think the max data transfer for a sata3 connection is 600MB/s and the max for a pcie3 lane is 1GB/s If I'm following along correctly, the 9400-16i is bottlenecking these drives right? If this is correct, what HBA would fix it?
January 26, 20251 yr Community Expert Solution 9400-16i is capable of SAS3 (12G) speeds. Each SAS port carries 4x SAS lanes, your HBA has 4 ports (16 lanes total). You only have 4x SSDs, so with only that 1 port, even with a workload to max them out, the HBA would still not be a bottleneck.
January 26, 20251 yr Community Expert 14 hours ago, peace-keeping-villa8590 said: They are 12Gb SAS SSD's Then they will link at SAS3 speeds (1200MB/s)
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